Google Chrome recently disabled the option to navigate tab history using the backspace key. Most of us welcome this change, but for those who miss this keyboard shortcut, here is the new shortcut:
ALT + LEFT ARROW
According to Google, out of all the backspace hits on Chrome, 0.04% was for actually going back to the previous page visited. However 0.005% backspace hits where actually intended to be within a form.
And thus, the backspace key was removed its privileged duty of going back to the previous page on a Chrome tab.
If you are trying backspace after for the first time after the update, you will be told to use ALT + LEFT ARROW to navigate to the previous page.
Also, use ALT + RIGHT ARROW to go forward on a tab.